* quadrature mirror filter (QMF) coefficients (ITU-T G.722 Table 11) inlined
* in code below: 3, -11, 12, 32, -210, 951, 3876, -805, 362, -156, 53, -11
*/
-static const int16_t qmf_coeffs[12] = {
- 3, -11, 12, 32, -210, 951, 3876, -805, 362, -156, 53, -11,
-};
-static void g722_apply_qmf(const int16_t *prev_samples, int *xout1, int *xout2)
+static void g722_apply_qmf(const int16_t *prev_samples, int xout[2])
{
- int i;
-
- *xout1 = 0;
- *xout2 = 0;
- for (i = 0; i < 12; i++) {
- MAC16(*xout2, prev_samples[2*i ], qmf_coeffs[i ]);
- MAC16(*xout1, prev_samples[2*i+1], qmf_coeffs[11-i]);
- }
+ xout[1] = MUL16(*prev_samples++, 3);
+ xout[0] = MUL16(*prev_samples++, -11);
+
+ MAC16(xout[1], *prev_samples++, -11);
+ MAC16(xout[0], *prev_samples++, 53);
+
+ MAC16(xout[1], *prev_samples++, 12);
+ MAC16(xout[0], *prev_samples++, -156);
+
+ MAC16(xout[1], *prev_samples++, 32);
+ MAC16(xout[0], *prev_samples++, 362);
+
+ MAC16(xout[1], *prev_samples++, -210);
+ MAC16(xout[0], *prev_samples++, -805);
+
+ MAC16(xout[1], *prev_samples++, 951);
+ MAC16(xout[0], *prev_samples++, 3876);
+
+ MAC16(xout[1], *prev_samples++, 3876);
+ MAC16(xout[0], *prev_samples++, 951);
+
+ MAC16(xout[1], *prev_samples++, -805);
+ MAC16(xout[0], *prev_samples++, -210);
+
+ MAC16(xout[1], *prev_samples++, 362);
+ MAC16(xout[0], *prev_samples++, 32);
+
+ MAC16(xout[1], *prev_samples++, -156);
+ MAC16(xout[0], *prev_samples++, 12);
+
+ MAC16(xout[1], *prev_samples++, 53);
+ MAC16(xout[0], *prev_samples++, -11);
+
+ MAC16(xout[1], *prev_samples++, -11);
+ MAC16(xout[0], *prev_samples++, 3);
}
av_cold void ff_g722dsp_init(G722DSPContext *c)
{
c->apply_qmf = g722_apply_qmf;
+
+ if (ARCH_ARM)
+ ff_g722dsp_init_arm(c);
}